250-500cc Torque Settings Wr 250 Translation Needed

Just completing my first ever top end rebuild of my wr 250 husky.
My Manual says 15.9 dividedby 18,1 lbft ????????????
Or 21.6 dividedby24.5 nm?? For cylinder nut
And 13 dividedby14.5 lbft for the cylinder head nut?
What does this mean?
Also there was hardly any water/coolant in it and the gear oil was low and half water!
How who why what to do now?

It isn't divided by but a range so the cylinder nut for example has a min torque of 21.6nm and max torque of 24.5nm.

Torque setting are given a range as there are so many factors that effect the torque like ambient temperature, type of torque wrench, using an extension bar, lube on the bolts ...there are formula's to calculate proper torque settings and if you know an engineer, ask.

Since we're dirtbikers, choose the middle of the range, torque cold, check torque after run-in and check torque cold again..preferrably at night as the metals will have contracted enough for you to torque down properly (remember ambient temperature).

Please tell me you didn't divided it the numbers as .8nm is less then hand tight (around 1.5nm)!!!

Drrr. Im so dumb. Thanks alot going to do it right now.

Sounds much sweeter and less smoke now!
Got a leak from the left radiator [just dripping]. ill take it tm for a test ride and keep an eye on coolant and gear oil. fingers crossed.